[PATCH] Replace libdepends/libprovides

[Allan McRae]

This patch series replaces the old libdepends/libprovides system into
something akin to that used by APK.  In short, makepkg.conf will have
a variable like:

LIB_DIRS=('lib:usr/lib' 'lib32:usr/lib32')

At the end of package building, makepkg will look in the library
directories and add a provide.  E.g. for pacman:

provide = lib:libalpm.so.13

Note the prefix matches the prefix given to the relevant directory in
LIB_DIRS.  Similarly, makepkg can add dependencies on libraries. E.g.
pacman may have:

depends = lib:libgpgme.so.11

Note, to help with bootstrapping this system, or if packages just do
not want to add libprovides, the depends entries are only added if a
package actually provides them.

This is different to the APK system for libraries which uses "so" as the
prefix and is not configurable.  But Alpine used musl, which has no
concept of multilib, so we need to be a bit more flexible.

The dependency/provides addotions can all be disabled in pacman.conf
with the '!autodeps' option.

Note that APK has similar things for binaries and pkg-config files. e.g.
provides = cmd:pacman
provides = pc:libalpm

These can readily be added as dropins to libmakepkg.

Allan McRae (4):
  makepkg: remove libdepends and libprovides
  libmakepkg: add framework for autodeps
  libmakepkg: automatically add library sonames to provides
  libmakepkg: automatically add library dependencies

 doc/PKGBUILD.5.asciidoc                       |   9 --
 doc/makepkg.conf.5.asciidoc                   |  11 ++
 etc/makepkg.conf.in                           |   8 +-
 scripts/libmakepkg/autodep.sh.in              |  38 ++++++
 .../libmakepkg/autodep/library_depends.sh.in  |  75 +++++++++++
 .../libmakepkg/autodep/library_provides.sh.in |  56 +++++++++
 scripts/libmakepkg/autodep/meson.build        |  18 +++
 scripts/libmakepkg/meson.build                |   1 +
 scripts/makepkg.sh.in                         | 119 +-----------------
 9 files changed, 206 insertions(+), 129 deletions(-)
 create mode 100644 scripts/libmakepkg/autodep.sh.in
 create mode 100644 scripts/libmakepkg/autodep/library_depends.sh.in
 create mode 100644 scripts/libmakepkg/autodep/library_provides.sh.in
 create mode 100644 scripts/libmakepkg/autodep/meson.build

-- 
2.34.1